Hi @James_Heckman,
It sounds like your SonicTransporter doesn’t have an active internet connection or valid DNS servers.
I recall you were working with Tony in the previous thread (Adding dCS Rossini to Roon setup), do you by any chance know if the changes you made impacted the SonicTranporters DNS servers or access to the external network?
Also, can you provide some more information regarding your network setup, such as the router’s model/manufacturer and the model/manufacturer of any switches/range extenders/powerline adapters/access points/ect?